Pendragon: ORC Rating

GPH

705.6

OSN

681

LOA

10.98 m

Displacement

7830 kg

Triple-Number Ratings

Lower is faster

Triple Inshore

Low

0.5577

Medium

0.7756

High

0.9377

Triple Offshore

Low

0.7206

Medium

0.9681

High

1.1171

Boat Specifications

Dimensions

Length overall: 10.98 m
Beam: 3.03 m
Draft: 1.79 m
Displacement: 7830 kg
Crew weight: 542 kg
Wetted surface: 28.18 m²

Sails

Mainsail: 28.41 m²
Genoa: 35.83 m²
Spinnaker: 90.05 m²
Asymmetric spinnaker: 76.77 m²

Design

Type: Excalibur 36ft
Builder: Souther Ocean Supp
Designer: van de Stadt
Year built: 1968
Stability index: 116

Performance data

Polar CSV

Each row is TWS followed by TWA and boat-speed pairs. Paste it directly into Offwind or compatible navigation software.

6,44.8,3.974234,52,4.38,60,4.67,75,4.87,90,4.88,110,4.97,120,4.84,135,4.4,146.6,3.880947,150,3.75
8,42.9,4.695971,52,5.22,60,5.51,75,5.74,90,5.9,110,6.05,120,5.9,135,5.4,150,4.77,150.5,4.745186
10,42,5.247968,52,5.9,60,6.21,75,6.45,90,6.7,110,6.81,120,6.72,135,6.32,150,5.63,152,5.526942
12,42.4,5.822966,52,6.44,60,6.67,75,6.84,90,7.08,110,7.17,120,7.12,135,6.9,150,6.41,154.7,6.194125
14,41.8,6.183968,52,6.75,60,6.92,75,7.06,90,7.31,110,7.44,120,7.4,135,7.21,150,6.91,162.8,6.490255
16,41.1,6.356466,52,6.92,60,7.09,75,7.24,90,7.41,110,7.71,120,7.68,135,7.49,150,7.2,176.3,6.734036
20,40.2,6.49388,52,7.06,60,7.25,75,7.51,90,7.64,110,8.15,120,8.28,135,8.1,150,7.74,179,7.311114

Wind Speed	52°	60°	75°	90°	110°	120°	135°	150°
6	4.38	4.67	4.87	4.88	4.97	4.84	4.4	3.75
8	5.22	5.51	5.74	5.9	6.05	5.9	5.4	4.77
10	5.9	6.21	6.45	6.7	6.81	6.72	6.32	5.63
12	6.44	6.67	6.84	7.08	7.17	7.12	6.9	6.41
14	6.75	6.92	7.06	7.31	7.44	7.4	7.21	6.91
16	6.92	7.09	7.24	7.41	7.71	7.68	7.49	7.2
20	7.06	7.25	7.51	7.64	8.15	8.28	8.1	7.74

Wind Speed	Beat Angle	Beat VMG	Run Angle	Run VMG
6	44.8°	2.82	146.6°	3.24
8	42.9°	3.44	150.5°	4.13
10	42°	3.9	152°	4.88
12	42.4°	4.3	154.7°	5.6
14	41.8°	4.61	162.8°	6.2
16	41.1°	4.79	176.3°	6.72
20	40.2°	4.96	179°	7.31

VPP POLAR · BOAT SPEED BY TWAKT

TRUE WIND ANGLE —

READ AT ANGLE

Hover or tap the chart, or use the slider, to read boat speeds.

True wind speed 6 kt8 kt10 kt12 kt14 kt16 kt20 kt

Data table

Boat speed by true wind angle and true wind speed
TWA	Boat speed in 6 kt (kt)	Boat speed in 8 kt (kt)	Boat speed in 10 kt (kt)	Boat speed in 12 kt (kt)	Boat speed in 14 kt (kt)	Boat speed in 16 kt (kt)	Boat speed in 20 kt (kt)
0°	0.00	0.00	0.00	0.00	0.00	0.00	0.00
52°	4.38	5.22	5.90	6.44	6.75	6.92	7.06
60°	4.67	5.51	6.21	6.67	6.92	7.09	7.25
75°	4.87	5.74	6.45	6.84	7.06	7.24	7.51
90°	4.88	5.90	6.70	7.08	7.31	7.41	7.64
110°	4.97	6.05	6.81	7.17	7.44	7.71	8.15
120°	4.84	5.90	6.72	7.12	7.40	7.68	8.28
135°	4.40	5.40	6.32	6.90	7.21	7.49	8.10
150°	3.75	4.77	5.63	6.41	6.91	7.20	7.74